SOLUTION: what is a solution to 8cosx+4=0 in degrees? a. undefined b.120* c. -30* d. 1*

Algebra ->  Trigonometry-basics -> SOLUTION: what is a solution to 8cosx+4=0 in degrees? a. undefined b.120* c. -30* d. 1*      Log On


   

Question 615813: what is a solution to 8cosx+4=0 in degrees?
a. undefined
b.120*
c. -30*
d. 1*
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
8cos(x)+4=0

8cos(x)=-4

cos(x)=-4/8

cos(x)=-1/2

I'll let you take over from here.